Selected Experiments With Proteins At Solid Liquid Interfaces
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Selected Experiments With Proteins At Solid Liquid Interfaces
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Author : Jonathan Teichroeb
language : en
Publisher:
Release Date : 2008
Selected Experiments With Proteins At Solid Liquid Interfaces written by Jonathan Teichroeb and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
This thesis describes a number of novel experiments contributing to the understanding of protein adsorption from both a fundamental and applied perspective. The first three papers involve the use of the localized surface plasmon resonance of gold nanospheres to measure protein conformational dependencies during heat and acid denaturation. A significant finding of all three studies is that the state and stability of BSA depends strongly upon local curvature. The last two papers investigate protein adsorption relevant to the biomaterial field. A unique fibril-like morphology is identified on galyfilcon A. Protein morphology is discussed in terms of bare lens morphology, roughness, and surface composition.
Proteins At Solid Liquid Interfaces
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Author : Philippe Déjardin
language : en
Publisher: Springer
Release Date : 2009-09-02
Proteins At Solid Liquid Interfaces written by Philippe Déjardin and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-02 with Science categories.
Proteins At Liquid Interfaces
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Author : D. Möbius
language : en
Publisher: Elsevier
Release Date : 1998-04-24
Proteins At Liquid Interfaces written by D. Möbius and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-04-24 with Science categories.
The interfacial behaviour of surfactants and proteins, and their mixtures, is of importance in a wide range of areas such as food technology, detergency, cosmetics, coating processes, biomedicine, pharmacy and biotechnology. Methods such as surface and interfacial tension measurements and interfacial dilation and shear rheology characterise the relationships between these interfacial properties and the complex behaviour of foams and emulsions is established. Recently-developed experimental techniques, such as FRAP which enable the measurement of molecular mobility in adsorption layers, are covered in this volume. The development of theories to describe the thermodynamic surface state or the exchange of matter for proteins and protein/surfactant mixtures is also described. Features of this book: • Reflects the state-of-the-art research and application of protein interfacial layers rather than a snapshot of only some recent developments. • Emphasis is placed on experimental details as well as recent theoretical developments. • New experimental techniques applied to protein interfacial layers are described, such as FRAP or ADSA, or rheological methods to determine the mechanical behaviour of protein-modified interfaces. • A large number of practical applications, ranging from emulsions relevant in food technology for medical problems such as lung surfactants, to the characterisation of foams intrinsic to beer and champagne production. The book will be of interest to research and university institutes dedicated to interfacial studies in chemistry, biology, pharmacy, medicine and food engineering. Industrial departments for research and technology in food industry, pharmacy, medicine and brewery research will also find this volume of value.
Proteins At Solid Liquid Interfaces
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Author : Philippe Déjardin
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-09-28
Proteins At Solid Liquid Interfaces written by Philippe Déjardin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-09-28 with Science categories.
This book opens with a description of fundamental aspects of protein adsorption to surfaces, a phenomenon that plays a key role in biotechnological applications, especially at solid-liquid interfaces. Presented here are methods for studying adsorption kinetics and conformational changes such as optical waveguide lightmode spectroscopy (OWLS). Also described are sensitive bench techniques for measuring the orientation and structure of proteins at solid-liquid interfaces, including total internal reflection ellipsometry (TIRE), dual polarisation interferometry (DPI) and time of flight - secondary ion mass spectrometry (TOF–SIMS). A model study of fibronectin at polymer surfaces is included, as are studies using microporous membranes and textiles with immobilized enzymes for large-scale applications. Biocompatibility, anti-fouling properties and surface modification to modulate the adsorption and activity of biomolecules are among the other topics addressed in this invaluable book.
Proteins At Solid Liquid Interfaces
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Author : Ananthakrishnan G. Sethuraman
language : en
Publisher:
Release Date : 2004
Proteins At Solid Liquid Interfaces written by Ananthakrishnan G. Sethuraman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Simulating Protein Adsorption For Experimental Comparison
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Author : Michael Deighan
language : en
Publisher:
Release Date : 2014
Simulating Protein Adsorption For Experimental Comparison written by Michael Deighan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Many biological processes and technological applications involve proteins coming into contact with a solid surface. Generally, we know that proteins experience some degree of conformational change at the solid/liquid interface, and can measure these changes in the lab. However, while many experimental techniques exist for characterizing surface-bound proteins, none have been able to resolve high-precision structures. Computer simulation offers a unique route to determining how proteins adsorb. Herein, we apply a popular statistical sampling technique - Parallel Tempering Metadynamics - to all-atom molecular dynamics simulations of ex- plicitly solvated proteins interacting with solid surfaces. We show that by biasing specific degrees of freedom - or collective variables - a protein can be influenced to exhaustively explore conformational space both on and off a surface. The results from these simulations can be post-processed to reveal details such as: surface- bound conformations, orientations, and finer structural details like interatomic distances and Ramachandran angles - which, in turn, can be compared to, and validated by, experimental measurements. Ultimately, this work should convey the descriptive power that can arise from a mutually beneficial partnership between surface science and computer simulation in the context of biomolecular adsorption.
Protein Instability At Interfaces During Drug Product Development
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Author : Jinjiang Li
language : en
Publisher: Springer Nature
Release Date : 2021-02-12
Protein Instability At Interfaces During Drug Product Development written by Jinjiang Li and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-12 with Medical categories.
Proteins are exposed to various interfacial stresses during drug product development. They are subjected to air-liquid, liquid-solid, and, sometimes, liquid-liquid interfaces throughout the development cycle-from manufacturing of drug substances to storage and drug delivery. Unlike small molecule drugs, proteins are typically unstable at interfaces where, on adsorption, they often denature and form aggregates, resulting in loss of efficacy and potential immunogenicity. This book covers both the fundamental aspects of proteins at interfaces and the quantification of interfacial behaviors of proteins. Importantly, this book introduces the industrial aspects of protein instabilities at interfaces, including the processes that introduce new interfaces, evaluation of interfacial instabilities, and mitigation strategies. The audience that this book targets encompasses scientists in the pharmaceutical and biotech industry, as well as faculty and students from academia in the surface science, pharmaceutical, and medicinal chemistry areas.
The Behavior Of Proteins At Solid Liquid Interfaces
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Author : Adam Till Garland
language : en
Publisher:
Release Date : 2014
The Behavior Of Proteins At Solid Liquid Interfaces written by Adam Till Garland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The behavior of a protein molecule at the solid-liquid interface is a worthy scientific problem for at least three reasons. The main driving force for studying this problem is a practical one, as many areas of bio-related technologies, such as medical implants, biosensing, and drug delivery, require the understanding of protein-surface interactions. In this dissertation, the nature of the precursive weakly adsorbed state of proteins during binding is reviewed. From this perspective, the adsorption and binding of proteins to a solid block copolymer thin film was achieved with regular spacing. Further efforts produced a monolayer of green fluorescent protein (GFP) covalently bound with regular spacing and orientation to a diblock copolymer thin film. This protein could be folded and refolded by changing solvent characteristics. We also explored the binding of DC-SIGN to mannose and mannotriose bearing lipid membranes. While no binding was observed, the usefulness of the lipid-based glycan microarray was proven using the well-studied CTB-GM1 binding motif.
Particles At Fluid Interfaces And Membranes
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Author : P. Kralchevsky
language : en
Publisher: Elsevier
Release Date : 2001-01-22
Particles At Fluid Interfaces And Membranes written by P. Kralchevsky and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-01-22 with Science categories.
In the small world of micrometer to nanometer scale many natural and industrial processes include attachment of colloid particles (solid spheres, liquid droplets, gas bubbles or protein macromolecules) to fluid interfaces and their confinement in liquid films. This may lead to the appearance of lateral interactions between particles at interfaces, or between inclusions in phospholipid membranes, followed eventually by the formation of two-dimensional ordered arrays. The book is devoted to the description of such processes, their consecutive stages, and to the investigation of the underlying physico-chemical mechanisms. The first six chapters give a concise but informative introduction to the basic knowledge in surface and colloid science, which includes both traditional concepts and some recent results. Chapters 1 and 2 are devoted to the basic theory of capillarity, kinetics of surfactant adsorption, shapes of axisymmetric fluid interfaces, contact angles and line tension. Chapters 3 and 4 present a generalization of the theory of capillarity to the case, in which the variation of the interfacial (membrane) curvature contributes to the total energy of the system. The generalized Laplace equation is applied to determine the configurations of free and adherent biological cells. Chapters 5 and 6 are focused on the role of thin liquid films and hydrodynamic factors in the attachment of solid and fluid particles to an interface. Surface forces of various physical nature are presented and their relative importance is discussed. Hydrodynamic interactions of a colloidal particle with an interface (or another particle) are also considered.Chapters 7 to 10 are devoted to the theoretical foundation of various kinds of capillary forces. When two particles are attached to the same interface (membrane), capillary interactions, mediated by the interface or membrane, appear between them. Two major kinds of capillary interactions are described: (i) capillary immersion force related to the surface wettability (Chapter 7), (ii) capillary flotation force originating from interfacial deformations due to particle weight (Chapter 8). Special attention is paid to the theory of capillary immersion forces between particles entrapped in spherical liquid films (Chapter 9). A generalization of the theory of immersion forces allows one to describe membrane-mediated interactions between protein inclusions into a lipid bilayer (Chapter 10).Chapter 11 is devoted to the theory of the capillary bridges and the capillary-bridge forces, whose importance has been recognized in phenomena like consolidation of granules and soils, wetting of powders, capillary condensation, long-range hydrophobic attraction, etc. The nucleation of capillary bridges is also examined.Chapter 12 considers solid particles, which have an irregular wetting perimeter upon attachment to a fluid interface. The undulated contact line induces interfacial deformations, which engender a special lateral capillary force between the particles. The latter contributes to the dilatational and shear elastic moduli of particulate adsorption monolayers.Chapter 13 describes how lateral capillary forces, facilitated by convective flows and some specific and non-specific interactions, can lead to the aggregation and ordering of various particles at fluid interfaces or in thin liquid films. Recent results on fabricating two-dimensional (2D) arrays from micrometer and sub-micrometer latex particles, as well as 2D crystals from proteins and protein complexes, are reviewed. Chapter 14 presents applied aspects of the particle-surface interaction in antifoaming and defoaming. The mechanisms of antifoaming action involve as a necessary step the entering of an antifoam particle at the air-water interface. The considered mechanisms indicate the factors for control of foaminess.
Protein Adsorption At Solid Liquid Interfaces
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Author : Hendrik Sibolt van Damme
language : en
Publisher:
Release Date : 1990
Protein Adsorption At Solid Liquid Interfaces written by Hendrik Sibolt van Damme and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.